Soap Skin & Bubble is a popular SketchUp extension developed to solve the "membrane" problem. When you select a set of edges forming a closed loop, the tool creates a mesh surface—a "skin"—that spans across them 1.2.1 .
Modifies the skin tension to change how tight or loose the mesh stretches. Tensile fabric architecture, tents, and sails. Quick Guide to Using the Plugin Soap Skin & Bubble - SketchUp Extension Warehouse